Poor quality. Poor app.

If you look at all of the apps that this developer makes, you see a pattern: quick and easy to make, poor design aesthetics, leveraging freely available code and media for profit. There is no pride. This is the type of development one would expect on the Droid platform. Not here.

This app is the same. The interface is ugly. The sounds are all "borrowed". There is no pride here. No skill. No art.

Go search around. There are far better apps that do this job.

Jim J about Binaural Beats Master Collection